Crawler + analysis admin dashboards gain a Live / History / Metrics
segmented view.
History: searchable, filterable, paginated job log per subsystem
(crawler_jobs across all states/kinds; page_analysis terminal outcomes),
with inline dead-job requeue and a Duration column.
Live: enrich analysis SSE events with manga title + chapter number and add
a sticky "Now analyzing" banner that jumps to and highlights the page.
Metrics: new durable crawl_metrics table (migration 0028) timing every
crawl op (manga list walk, manga detail, cover, whole chapter; per-page
derived from chapter) plus page_analysis.duration_ms for analysis. New
endpoints serve per-type average durations + success rates and a recent-ops
log; a cron reaper (CRAWL_METRICS_RETENTION_DAYS) bounds growth.
Tested: repo + API integration tests, vitest for the API client and
fmtDuration, and Playwright for the History/Metrics tabs.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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